I'm about to buy a new computer soon (as soon as week). I just can't decide between the new dual 867 or the old 1 ghz. i know i absolutely want either one of these two comps, and nothing else. does ddr really make that much of a difference? can you guys help me out with your opinions??? i'm REALLY stuck. by the way, if i do decide on getting the old 1ghz, would i have to pay full price for 10.2?